$CH_3COONa+NaOH\xrightarrow{{t^o, CaO}} CH_4+Na_2CO_3$
$2CH_4\xrightarrow{{1500^oC}} C_2H_2+3H_2$
$3C_2H_2\xrightarrow{{600^oC, C}} C_6H_6$
$C_6H_6+Cl_2\xrightarrow{{Fe, t^o}} C_6H_5Cl+HCl$
$C_6H_5Cl+NaOH\xrightarrow{{t^o\text{cao}, \text{p cao}, 1:1}} C_6H_5OH+NaCl$